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authorCarl Worth <cworth@cworth.org>2006-09-21 15:13:47 -0700
committerCarl Worth <cworth@cworth.org>2006-11-02 13:02:03 -0800
commit16a08ff1b03a7fc110dc3359f030ea6ff8af03a7 (patch)
tree0581e448a56d9b8bb0ed5b039d350033108067a8
parent459223945e0e974e4de7ae158d0a218c67434add (diff)
Add test case from bug #8379 demonstrating infinite loop during round join
(cherry picked from 8744929030ed8d42c271d9abb202975f62de166c commit)
-rw-r--r--test/Makefile.am1
-rw-r--r--test/infinite-join.c73
2 files changed, 74 insertions, 0 deletions
diff --git a/test/Makefile.am b/test/Makefile.am
index 335a70c82..a5ce1c34d 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -38,6 +38,7 @@ glyph-cache-pressure \
get-and-set \
get-group-target \
gradient-alpha \
+infinite-join \
leaky-dash \
leaky-polygon \
line-width \
diff --git a/test/infinite-join.c b/test/infinite-join.c
new file mode 100644
index 000000000..fffb38615
--- /dev/null
+++ b/test/infinite-join.c
@@ -0,0 +1,73 @@
+/*
+ * Copyright © 2006 Red Hat, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software
+ * and its documentation for any purpose is hereby granted without
+ * fee, provided that the above copyright notice appear in all copies
+ * and that both that copyright notice and this permission notice
+ * appear in supporting documentation, and that the name of the
+ * copyright holders not be used in advertising or publicity
+ * pertaining to distribution of the software without specific,
+ * written prior permission. The copyright holders make no
+ * representations about the suitability of this software for any
+ * purpose. It is provided "as is" without express or implied
+ * warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
+ * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ * SOFTWARE.
+ *
+ * Author: Carl D. Worth <cworth@cworth.org>
+ */
+
+/* Test case for bug #8379:
+ *
+ * infinite loop when stroking
+ * https://bugs.freedesktop.org/show_bug.cgi?id=8379
+ */
+
+#include "cairo-test.h"
+
+static cairo_test_draw_function_t draw;
+
+cairo_test_t test = {
+ "infinite-join",
+ "Test case for infinite loop when stroking with round joins",
+ 120, 70,
+ draw
+};
+
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+ cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
+
+ /* scaling 2 times causes a slight rounding error in the ctm.
+ * Without that, the bug doesn't happen. */
+ cairo_scale (cr, 20 / 100., 20 / 100.);
+ cairo_scale (cr, 1. / 20, 1. / 20);
+
+ cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
+ cairo_set_line_width (cr, 20);
+
+ cairo_new_path (cr);
+ cairo_move_to (cr, 18928, 13843);
+ cairo_line_to (cr, -6928, 13843);
+ cairo_line_to (cr, -6928, -6842);
+ cairo_line_to (cr, 18928, -6842);
+ cairo_line_to (cr, 18928, 13843);
+ cairo_stroke (cr);
+
+ return 0;
+}
+
+int
+main (void)
+{
+ return cairo_test (&test);
+}